Intel Core i7-14700K vs Intel Core i7-3960X Extreme Edition

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Core i7-14700K compared with Core i7-3960X Extreme Edition

	IntelCore i7-14700K	IntelCore i7-3960X Extreme Edition
Overview
Released
Released	October 2023	November 2011
Cores and clocks
Cores
Cores	20 (8 performance, 12 efficiency) (better)	6
Threads
Threads	28 (better)	12
Base clock
Base clock	3.4 GHz	3.3 GHz
Boost clock
Boost clock	5.6 GHz (better)	3.9 GHz
L3 cache
L3 cache	33 MB (better)	15 MB
Cores
Cores	8 Performance-cores and 12 Efficient-cores, with Hyper-Threading; codename Raptor Lake	Six cores and twelve threads with Hyper-Threading; fully unlocked multiplier confirmed by Intel’s exact product brief. Intel states that VT-d requires C2 stepping.
Clocks
Clocks	P-core base 3.4 GHz, max turbo 5.5 GHz; E-core base 2.5 GHz, max turbo 4.3 GHz; Turbo Boost Max 3.0 5.6 GHz	3.30 GHz base and up to 3.90 GHz Turbo Boost 2.0. Intel gives Q4 2011; EE Times’ contemporary 14 November report quotes Intel confirming the exact model is available now. Newegg’s earlier listing date alone does not establish sale.
Cache
Cache	33 MB Intel Smart Cache (L3); 28 MB L2	15 MB shared L3 cache.
Graphics and AI
Built-in graphics
Built-in graphics	Yes	No
Graphics
Graphics	Intel UHD Graphics 770, 32 execution units, up to 1.6 GHz; outputs eDP 1.4b, DP 1.4a, HDMI 2.1; up to 4 displays	Intel’s exact-model Extreme Edition chart lists no processor graphics.
Platform
Socket
Socket	LGA1700	LGA2011
Base power
Base power	125 W	130 W
Maximum power
Maximum power	253 W	–
Unlocked
Unlocked	Yes	Yes
Cooler in the box
Cooler in the box	–	No
Memory support
Memory support	Up to DDR5 5600 MT/s or up to DDR4 3200 MT/s; 2 channels, up to 192 GB; ECC supported	Up to 64 GB across four DDR3-1066/1333/1600 channels; maximum 51.2 GB/s bandwidth, without ECC.
PCIe
PCIe	PCIe 5.0 and 4.0; 20 lanes (Up to 1x16+4, 2x8+4); DMI 4.0 x8	40 PCIe 2.0 lanes in Intel’s current exact specification page.
Chipsets
Chipsets	Intel 600 and 700 series	–
Process
Process	Intel 7	32 nm; Sandy Bridge-E. Package 52.5 × 45.0 mm; Intel’s 66.8°C limit is TCASE, not junction temperature.
Cooler
Cooler	max operating temperature 100 °C; thermal specification PCG 2020A	Intel explicitly says the boxed product has no fan or heatsink. Requires separate LGA2011-compatible cooling; the original product brief names X79.